Sunday, September 6, 2009

Touch screen patents

This is a list of patents for representative touch screen technologies. Each touch screen technology is well described in “A survey of mainstream & emerging touch technologies” by G. Walker.


Analog Resistive

Digital Resistive (Multi-Touch)

Surface Capacitive

  • US4806709

Surface Acoustic Wave

Traditional Infrared

Projected Capacitive

Camera-Based Optical

Acoustic Pulse Recognition

Bending Wave (DST)

Force Sensing

Waveguide Infrared

LCD In-Cell Optical

LCD In-Cell Capacitive

LCD In-Cell Resistive


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